Battery pack

Abstract

The utility model relates to the technical field of batteries, in particular to a battery pack. The battery pack comprises a frame, a first cover plate and a power battery circuit breaking unit, the frame is provided with a mounting cavity and a frame outer side wall, the mounting cavity is provided with a first cavity opening, and the first cavity opening is located in the frame outer side wall; the first cover plate is detachably connected with the outer side wall of the frame and covers the opening of the first cavity; and the power battery circuit breaking unit is arranged in the mounting cavity. When the power battery circuit breaking unit needs to be replaced, the first cover plate is detached from the outer side wall of the frame, so that the power battery circuit breaking unit can be exposed, and the power battery circuit breaking unit can be detached, replaced, maintained and the like. In the process of disassembling the power battery circuit breaking unit, the upper cover and the bottom plate of the battery pack do not need to be disassembled, only the first cover plate needs to be disassembled, and the battery pack has the advantage of being easy and convenient to disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery pack. Background Art

[0002] BDU is a power battery circuit breaker unit, an important component in the high-voltage circuit of new energy vehicles. It controls the power-on and power-off process, pre-charging process, and charging process of the high-voltage electrical circuit. BDU has an important impact on the service life, control strategy, and high-voltage electrical safety of new energy vehicles. When replacing and repairing the BDU, the BDU needs to be removed from the power battery.

[0003] In the prior art, the BDU is installed in the power battery, and the upper cover or bottom plate of the battery pack can be directly removed, and then the BDU can be partially removed; or, an opening and a cover plate are set on the upper cover or bottom plate, and the cover plate covers the opening. When replacing the BDU, only the cover plate is removed without removing the entire upper cover or bottom plate, and the BDU is removed from the opening. The upper cover of the battery pack can also be provided with a bulging structure protruding from the upper cover surface, and the BDU is set in the bulging structure. When replacing the BDU, the cover plate or sealing structure of the bulging structure is removed, and then the BDU is disassembled.

[0004] In a CTC battery pack, glue needs to be poured inside the battery pack, the upper cover and the bottom plate cannot be disassembled, and the upper cover is required to be flat. Therefore, the BDU disassembly structure of the battery pack in the prior art is not suitable for use in a CTC battery pack. Utility Model Content

[0005] In view of this, the utility model aims to propose a battery pack to solve or partially solve the problem that the BDU disassembly structure in the existing battery pack is not suitable for use in the CTC battery pack.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] In a first aspect, an embodiment of the utility model provides a battery pack, which includes a frame, a first cover plate and a power battery circuit breaker unit; the frame is provided with an installation cavity and an outer wall of the frame, the installation cavity has a first cavity opening, and the first cavity opening is located on the outer wall of the frame; the first cover plate is detachably connected to the outer wall of the frame and covers the first cavity opening; the power battery circuit breaker unit is arranged in the installation cavity.

[0008] Optionally, the frame includes a frame body, a first extension plate and a second extension plate, and the frame outer side wall includes a first frame outer side wall; in a first direction, the first extension plate and the second extension plate are arranged at intervals; in a second direction, the frame body and the first frame outer side wall are arranged at intervals; in the second direction, one end of the first extension plate and one end of the second extension plate are respectively connected to the frame body, and the other end of the first extension plate and the other end of the second extension plate are respectively connected to the first frame outer side wall, and the first extension plate, the frame body, the second extension plate and the first frame outer side wall enclose the installation cavity; wherein, the first direction and the second direction intersect.

[0009] Optionally, a first bending portion is provided at one end of the first extension plate, the first bending portion extends from the first extension plate toward the second extension plate, and the end of the first bending portion facing the second extension plate is connected to the frame body.

[0010] Optionally, in the first direction, the outer side wall of the first frame includes a first half side wall and a second half side wall, and there is a gap between the first half side wall and the second half side wall; the end of the first half side wall away from the second half side wall is connected to the other end of the first extension plate, and the end of the second half side wall away from the first half side wall is connected to the other end of the second extension plate.

[0011] Optionally, in the third direction, both ends of the installation cavity have second cavity openings; the battery pack also includes two second cover plates, which are respectively located at the two ends of the installation cavity in the third direction, and the second cover plates are respectively connected to the first extension plate, the frame body, the second extension plate and the outer side wall of the first frame to cover the second cavity opening; wherein the third direction intersects with both the first direction and the second direction.

[0012] Optionally, the first extension plate and the second extension plate are both trapezoidal structures, the large end of the first extension plate and the large end of the second extension plate are respectively connected to the frame body, and the small end of the first extension plate and the small end of the second extension plate are respectively connected to the outer side wall of the first frame; the angle between the second cover plate and the third direction is an acute angle.

[0013] Optionally, the second cover plate is provided with a mounting hole; the battery pack further comprises a connector, the connector is provided in the mounting cavity, and a portion of the connector is passed through the mounting hole.

[0014] Optionally, the frame body includes a first plate, an inner wall of the frame, and a second plate; in the second direction, the inner wall of the frame and the outer wall of the first frame are arranged opposite to each other; the first plate, the inner wall of the frame and the second plate are connected to form a U-groove structure, and the end of the first plate facing away from the inner wall of the frame is connected to one end of the first extension plate, and the end of the second plate facing away from the inner wall of the frame is connected to one end of the second extension plate.

[0015] Optionally, the outer wall of the frame also includes a second outer wall of the frame; the U-groove structure includes a first U-groove opening and a second U-groove opening, the first U-groove opening faces the first outer wall of the frame, and the second U-groove opening faces the second outer wall of the frame; the second outer wall of the frame is respectively connected to the end of the first plate away from the inner wall of the frame and the end of the second plate away from the inner wall of the frame to cover the second U-groove opening.

[0016] Optionally, the frame is at least one of a sheet metal part, a roll-formed part, and a die-cast part.

[0017] The utility model discloses a battery pack. When a power battery circuit breaker unit needs to be replaced, the first cover plate is removed from the outer side wall of the frame to expose the power battery circuit breaker unit, so that the power battery circuit breaker unit can be disassembled, replaced, repaired, etc. In the process of disassembling the power battery circuit breaker unit, the battery pack does not need to disassemble the upper cover and the bottom plate of the battery pack, but only needs to disassemble the first cover plate, which has the advantages of simple and convenient disassembly; moreover, it does not need to disassemble the frame, and will not affect the battery cells located in the frame. Therefore, the battery pack of the embodiment of the present application can be a CTC battery pack that needs to be filled with glue in the battery pack, and the upper cover and the bottom plate are not removable.

[0018] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a battery pack according to an embodiment of the present utility model;

[0021] Figure 2 It is a partial structural schematic diagram of the battery pack described in the utility model;

[0022] Figure 3 It is a partial structural schematic diagram of the frame described in the utility model;

[0023] Figure 4 It is a structural schematic diagram of the installation cavity of the battery pack of the utility model;

[0024] Figure 5 It is a structural schematic diagram of an exploded view of the installation cavity of the battery pack of the utility model;

[0025] Figure 6 It is a schematic structural diagram of a battery pack according to another embodiment of the present invention.

[0026] Reference numerals:

[0027] 10-frame; 11-first cover plate; 12-installation cavity; 121-first cavity opening; 122-second cavity opening; 13-frame body; 131-first plate; 132-second plate; 133-frame inner wall; 134-first U-slot opening; 135-second U-slot opening; 14-first extension plate; 141-first bending portion; 15-second extension plate; 16-second cover plate; 161-installation hole; 17-connector; 18-side frame; 19-frame outer wall; 191-first frame outer wall; 192-second frame outer wall; 193-first half side wall; 194-second half side wall; 21-upper cover; 22-bottom plate; 30-power battery circuit breaker unit; 40-copper busbar. DETAILED DESCRIPTION

[0028] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can also be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0029] The utility model embodiment discloses a battery pack, referring to Figure 1 , which shows a schematic diagram of the structure of a battery pack provided by an embodiment of the utility model, and the battery pack can be applied to new energy vehicles. The battery pack includes an upper cover 21, a bottom plate 22 and a frame 10. In the Z direction, the upper end of the bottom plate 22 is connected to the upper cover 21, and the lower end of the bottom plate 22 is connected to the bottom plate 22. The cavity enclosed by the upper cover 21, the bottom plate 22 and the frame 10 is used to set the battery cell.

[0030] Reference Figure 5As shown, the battery pack includes a frame 10, a first cover plate 11 and a power battery circuit breaker unit 30; the frame 10 is provided with an installation cavity 12 and an outer wall 19 of the frame, the installation cavity 12 has a first cavity opening 121, and the first cavity opening 121 is located on the outer wall 19 of the frame; the first cover plate 11 is detachably connected to the outer wall 19 of the frame and covers the first cavity opening 121; the power battery circuit breaker unit 30 is arranged in the installation cavity 12.

[0031] When the power battery circuit breaker unit 30 of the battery pack of the embodiment of the present application needs to be replaced, the first cover plate 11 is removed from the outer side wall 19 of the frame to expose the power battery circuit breaker unit 30 so that the power battery circuit breaker unit 30 can be disassembled, replaced, repaired, etc.

[0032] In the battery pack of the embodiment of the present application, during the process of disassembling the power battery circuit breaker unit 30, there is no need to disassemble the upper cover 21 and the bottom plate 22 of the battery pack, and only the first cover plate 11 needs to be disassembled, which has the advantage of simple and convenient disassembly; moreover, there is no need to disassemble the frame 10, and the battery cells located in the frame 10 will not be affected. Therefore, the battery pack of the embodiment of the present application can be a CTC battery pack that requires glue filling in the battery pack, and the upper cover 21 and the bottom plate 22 are not removable.

[0033] Further, see Figure 6 As shown, the battery pack also includes a copper busbar 40, and a through hole (not shown in the figure) is further provided on the frame 10, the through hole connects the installation cavity 12 and the cavity in which the battery cell is arranged, the copper busbar 40 is passed through the through hole, one end of the copper busbar 40 is electrically connected to the battery cell, and the other end of the copper busbar 40 is electrically connected to the power battery circuit breaker unit 30, and the power battery circuit breaker unit 30 is electrically connected to the battery cell through the copper busbar 40.

[0034] Optional, see Figure 4 As shown, the frame 10 includes a frame body 13, a first extension plate 14 and a second extension plate 15, and the frame outer side wall 19 includes a first frame outer side wall 191; in a first direction, the first extension plate 14 and the second extension plate 15 are arranged at intervals; in a second direction, the frame body 13 and the first frame outer side wall 191 are arranged at intervals; in the second direction, one end of the first extension plate 14 and one end of the second extension plate 15 are respectively connected to the frame body 13, and the other end of the first extension plate 14 and the other end of the second extension plate 15 are respectively connected to the first frame outer side wall 191, and the first extension plate 14, the frame body 13, the second extension plate 15 and the first frame outer side wall 191 enclose an installation cavity 12; wherein the first direction and the second direction intersect.

[0035] Specifically, refer to Figure 4 As shown, the first direction is the Z direction, and the second direction is the X direction.

[0036] In the X direction, the end of the first extension plate 14 in the negative X direction is one end of the first extension plate 14, and the end of the first extension plate 14 in the positive X direction is the other end of the first extension plate 14. The end of the second extension plate 15 in the negative X direction is one end of the second extension plate 15, and the end of the second extension plate 15 in the positive X direction is the other end of the second extension plate 15.

[0037] In the X direction, the end of the first extension plate 14 in the negative X direction and the end of the second extension plate 15 in the negative X direction are respectively connected to the frame body 13, and the end of the first extension plate 14 in the positive X direction and the end of the second extension plate 15 in the positive X direction are respectively connected to the first frame outer wall 191, the first extension plate 14, the frame body 13, the second extension plate 15 and the first frame outer wall 191 enclose an installation cavity 12, and the power battery circuit breaker unit 30 is arranged in the installation cavity 12.

[0038] In the battery pack of the embodiment of the present application, the first extension plate 14 and the second extension plate 15 are arranged so that the installation cavity 12 protrudes from the frame body 13. The space of the installation cavity 12 is not limited by the size of the frame 10, and the space requirement for the installation of the power battery circuit breaker unit 30 is met.

[0039] In a specific embodiment, when the battery pack has a relatively regular structure, the first direction is perpendicular to the second direction.

[0040] Optional, see Figure 4 As shown, a first bending portion 141 is provided at one end of the first extension plate 14 . The first bending portion 141 extends from the first extension plate 14 toward the second extension plate 15 . The end of the first bending portion 141 facing the second extension plate 15 is connected to the frame body 13 .

[0041] Reference Figure 4 As shown, the first extension plate 14 is provided with a first bent portion 141 at the end in the negative direction of X, the first bent portion 141 is arranged along the Z direction, and the end of the first bent portion 141 in the negative direction of Z is connected to the frame body 13. The arrangement of the first bent portion 141 increases the height of the installation cavity 12 in the Z direction, increases the space in the installation cavity 12, and meets the space requirement for the installation of the power battery circuit breaker unit 30.

[0042] Optional, see Figure 4 As shown, in the first direction, the outer side wall 191 of the first frame includes a first half side wall 193 and a second half side wall 194, and there is a gap between the first half side wall 193 and the second half side wall 194; the end of the first half side wall 193 away from the second half side wall 194 is connected to the other end of the first extension plate 14, and the end of the second half side wall 194 away from the first half side wall 193 is connected to the other end of the second extension plate 15.

[0043] Further, see Figure 4As shown, the end of the first half side wall 193 in the positive Z direction is connected to the end of the first extension plate 14 in the positive X direction, and the end of the second half side wall 194 in the negative Z direction is connected to the end of the second extension plate 15 in the positive X direction.

[0044] In the battery pack of the embodiment of the present application, the first half side wall 193 and the second half side wall 194 are split structures. When repairing and replacing the power battery circuit breaker unit 30, the first half side wall 193 and the second half side wall 194 can be bent according to usage requirements to provide a larger operating space relative to the first cavity opening 121, thereby facilitating the disassembly, replacement and repair of the power battery circuit breaker unit 30.

[0045] Optional, see Figure 4 As shown, in the third direction, both ends of the mounting cavity 12 have a second cavity opening 122; Figure 5 As shown, the battery pack further includes two second cover plates 16, which are respectively located at two ends of the mounting cavity 12 in the third direction, and the second cover plates 16 are respectively connected to the first extension plate 14, the frame body 13, the second extension plate 15 and the first frame outer side wall 191 to cover the second cavity opening 122. The third direction intersects both the first direction and the second direction.

[0046] The third direction is the Y direction, a second cavity opening 122 is provided at the end of the mounting cavity 12 in the positive direction of the Y direction, another second cavity opening 122 is provided at the end of the mounting cavity 12 in the negative direction of the Y direction, a second cover plate 16 is located at the end of the mounting cavity 12 in the positive direction of the Y direction, and another second cover plate 16 is located at the end of the mounting cavity 12 in the negative direction of the Y direction. The second cover plate 16 covers the second cavity opening 122 to achieve sealing of the mounting cavity 12 and protect the power battery circuit breaker unit 30 of the mounting cavity 12.

[0047] In a specific embodiment, when the battery pack has a relatively regular structure, the third direction is perpendicular to both the first direction and the second direction, and the first direction, the second direction and the third direction are respectively the X direction, the Y direction and the Z direction.

[0048] Optionally, in one embodiment, referring to Figure 5 As shown, the first extension plate 14 and the second extension plate 15 are both trapezoidal structures, the large end of the first extension plate 14 and the large end of the second extension plate 15 are respectively connected to the frame body 13, and the small end of the first extension plate 14 and the small end of the second extension plate 15 are respectively connected to the outer side wall 191 of the first frame; the angle between the second cover plate 16 and the third direction is an acute angle.

[0049] At this time, the first extension plate 14, the second extension plate 15, the first cover plate 11 and the two second cover plates 16 are connected to form a wedge-shaped structure. Figure 1As shown, when the first cover plate 11 is subjected to a force in the negative X direction, the force exerted on the first cover plate 11 is transmitted through the first extension plate 14, the second extension plate 15 and the two second cover plates 16, which can reduce stress concentration and improve the structural strength of the battery pack.

[0050] Optionally, in another embodiment, referring to Figure 6 As shown, the first extension plate 14 and the second extension plate 15 are both long-shaped structures. The first extension plate 14, the second extension plate 15, the first cover plate 11 and the two second cover plates 16 are connected to form a rectangular structure. The rectangular structure has the advantage of a regular shape and is easy to process and manufacture.

[0051] Optional, see Figure 5 As shown, the second cover plate 16 is provided with a mounting hole 161 ; the battery pack further includes a connector 17 , the connector 17 is provided in the mounting cavity 12 , and a portion of the connector 17 is passed through the mounting hole 161 .

[0052] Specifically, the connector 17 is electrically connected to the power battery disconnecting unit 30 and is connected to an external device to achieve the transmission of information or current between the power battery disconnecting unit 30 and the external device.

[0053] Optionally, the connector 17 includes a high-voltage connector and a low-voltage connector to meet the transmission of information or current between the power battery circuit breaker unit 30 and external devices.

[0054] In a specific embodiment, the connectors 17 are connected to the second cover plate 16. Figure 2 As shown, the two connectors 17 located in the negative direction of Y are high-voltage connectors, and the connector 17 located in the positive direction of Y is a low-voltage connector.

[0055] In another specific embodiment, referring to Figure 6 As shown, the battery pack includes three connectors 17 , one of which is connected to the second cover plate 16 , and the other two connectors 17 are connected to the first cover plate 11 .

[0056] Of course, all connectors 17 may be connected to the first cover plate 11, in which case no mounting hole 161 is provided on the second cover plate 16. The embodiment of the present application does not limit the specific location and number of the connectors 17, as long as the use requirements are met.

[0057] Optional, see Figure 4As shown, the frame body 13 includes a first plate 131, an inner wall 133 of the frame and a second plate 132; in the second direction, the inner wall 133 of the frame and the outer wall 191 of the first frame are arranged opposite to each other; the first plate 131, the inner wall 133 of the frame and the second plate 132 are connected to form a U-groove structure, and the end of the first plate 131 away from the inner wall 133 of the frame is connected to one end of the first extension plate 14, and the end of the second plate 132 away from the inner wall 133 of the frame is connected to one end of the second extension plate 15.

[0058] Specifically, refer to Figure 4 As shown, the end of the first plate 131 in the positive X direction is connected to the end of the first extension plate 14 in the negative X direction, and the end of the second plate 132 in the positive X direction is connected to the end of the second extension plate 15 in the negative X direction.

[0059] In the embodiment of the present application, the frame body 13 includes a first plate 131, an inner side wall 133 of the frame, and a second plate 132. The first plate 131, the inner side wall 133 of the frame, and the second plate 132 are connected to form a U-groove structure, so that the frame body 13 has the advantages of light weight and high strength. Figure 4 As shown, the slot opening of the U-groove structure faces the positive X direction.

[0060] Optional, see Figure 5 As shown, the frame outer wall 19 also includes a second frame outer wall 192; the U-groove structure includes a first U-groove opening 134 and a second U-groove opening 135, the first U-groove opening 134 faces the first frame outer wall 191, and the second U-groove opening 135 faces the second frame outer wall 192; the second frame outer wall 192 is respectively connected to the end of the first plate 131 away from the frame inner wall 133 and the end of the second plate 132 away from the frame inner wall 133 to cover the second U-groove opening 135.

[0061] Further references Figure 5 As shown, the U-groove structure includes a first U-groove opening 134 and two second U-groove openings 135, and the first U-groove opening 134 is located between the two second U-groove openings 135. The first U-groove opening 134 is arranged corresponding to the mounting cavity 12, and the second U-groove opening 135 is arranged corresponding to the second frame outer side wall 192, and the end of the second frame outer side wall 192 in the positive direction of Z is connected to the end of the first plate 131 in the positive direction of X, and the end of the second frame outer side wall 192 in the negative direction of Z is connected to the end of the second plate 132 in the positive direction of X, and the second frame outer side wall 192 is connected to the first plate 131 and the second plate 132 to cover the second U-groove opening 135. At this time, the cross section is made parallel to XZ, and the shape of the second frame outer side wall 192, the first plate 131, the second plate 132 and the frame inner side wall 133 after being connected is a quadrilateral, which makes the frame 10 have the advantages of light weight and high structural strength.

[0062] Optional, see Figure 2 As shown, the frame 10 includes four side frames 18 , one of which is provided with a mounting cavity 12 , while the other three side frames 18 are not provided with a mounting cavity 12 .

[0063] Further references Figure 3 As shown, the side frame 18 is a hollow cylindrical structure, which makes the frame 10 have the advantages of light weight and high structural strength.

[0064] Optionally, the frame 10 is at least one of a sheet metal part, a roll-formed part, and a die-cast part.

[0065] Sheet metal is a comprehensive cold processing technology for thin metal plates (usually less than 6mm), including shearing, punching / cutting / compounding, folding, welding, riveting, splicing, forming, etc., which is suitable for use in battery packs.

[0066] A rolled part is a product produced by rolling technology. It is a common pressure transmission part in mechanical equipment. The rolling process involves using one or more sets of rollers to apply pressure through rotation and linear motion, thereby changing the shape of the workpiece and increasing its density and strength. When the frame 10 is a rolled part, it is also suitable for use in a battery pack.

[0067] Die casting is a pressure casting part. It uses a pressure casting mechanical die casting machine equipped with a casting mold to pour heated liquid copper, zinc, aluminum or aluminum alloy metal into the feed port of the die casting machine, and then die casting by the die casting machine to cast copper, zinc, aluminum or aluminum alloy parts of the shape and size limited by the mold. When the frame 10 is a die casting, it is also suitable for use in a battery pack.

[0068] In the battery pack of the embodiment of the present application, when the frame 10 is a sheet metal part, refer to Figure 3 and Figure 4 As shown, Figure 3 The side frame 18 is formed by bending and welding. Figure 4 The side frame is also formed by bending and welding. At this time, the inner side wall 133 of the frame, the first plate 131, the second plate 132, the first extension plate 14, the first half side wall 193, the second extension plate 15, and the second half side wall 194 are an integrated structural member formed by bending. Figure 6 As shown, the second frame outer side wall 192 and the second cover plate 16 are an integral structural member formed by bending. The above-mentioned integral structural member is connected by welding to form the frame 10. The first cover plate 11 can also be connected to the first half side wall 193 and the second half side wall 194 by welding.

[0069] When the power battery circuit breaker unit 30 of the battery pack of the embodiment of the present application needs to be replaced, the first cover plate 11 is removed from the outer side wall 19 of the frame to expose the power battery circuit breaker unit 30, so that the power battery circuit breaker unit 30 can be disassembled, replaced, and repaired. In the process of disassembling the power battery circuit breaker unit 30, it is not necessary to disassemble the upper cover 21 and the bottom plate 22 of the battery pack. Only the first cover plate 11 needs to be disassembled, which has the advantages of simple and convenient disassembly and reduces maintenance hours and costs. Moreover, there is no need to disassemble the frame 10, which will not affect the battery cells located in the frame 10. Therefore, the battery pack of the embodiment of the present application meets the requirements of a CTC battery pack that requires glue filling in the battery pack and the upper cover 21 and the bottom plate 22 are not removable.

[0070] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0071] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. For the embodiments of the device, electronic device, computer-readable storage medium and computer program products containing instructions, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A battery pack, characterized in that: The battery pack comprises a frame (10), a first cover plate (11) and a power battery disconnecting unit (30); The frame (10) is provided with a mounting cavity (12) and a frame outer side wall (19); the mounting cavity (12) has a first cavity opening (121); and the first cavity opening (121) is located on the frame outer side wall (19); The first cover plate (11) is detachably connected to the outer side wall (19) of the frame and covers the first cavity opening (121); The power battery disconnecting unit (30) is arranged in the installation cavity (12).

2. The battery pack according to claim 1, characterized in that: The frame (10) comprises a frame body (13), a first extension plate (14) and a second extension plate (15); the frame outer side wall (19) comprises a first frame outer side wall (191); in a first direction, the first extension plate (14) and the second extension plate (15) are arranged at intervals; in a second direction, the frame body (13) and the first frame outer side wall (191) are arranged at intervals; In the second direction, one end of the first extension plate (14) and one end of the second extension plate (15) are respectively connected to the frame body (13), the other end of the first extension plate (14) and the other end of the second extension plate (15) are respectively connected to the first frame outer side wall (191), and the first extension plate (14), the frame body (13), the second extension plate (15) and the first frame outer side wall (191) enclose the installation cavity (12); The first direction and the second direction intersect.

3. The battery pack according to claim 2, characterized in that: A first bending portion (141) is provided at one end of the first extension plate (14), and the first bending portion (141) extends from the first extension plate (14) toward the second extension plate (15), and the end of the first bending portion (141) facing the second extension plate (15) is connected to the frame body (13).

4. The battery pack according to claim 2, characterized in that: In the first direction, the first frame outer side wall (191) comprises a first half side wall (193) and a second half side wall (194), and a gap is provided between the first half side wall (193) and the second half side wall (194); The end of the first half side wall (193) away from the second half side wall (194) is connected to the other end of the first extension plate (14), and the end of the second half side wall (194) away from the first half side wall (193) is connected to the other end of the second extension plate (15).

5. The battery pack according to claim 2, characterized in that: In the third direction, both ends of the installation cavity (12) have second cavity openings (122); The battery pack further comprises two second cover plates (16), the two second cover plates (16) being respectively located at two ends of the mounting cavity (12) in the third direction, and the second cover plates (16) being respectively connected to the first extension plate (14), the frame body (13), the second extension plate (15) and the first frame outer side wall (191) to cover the second cavity opening (122); The third direction intersects both the first direction and the second direction.

6. The battery pack according to claim 5, characterized in that: The first extension plate (14) and the second extension plate (15) are both trapezoidal structures; the large end of the first extension plate (14) and the large end of the second extension plate (15) are respectively connected to the frame body (13); the small end of the first extension plate (14) and the small end of the second extension plate (15) are respectively connected to the outer side wall (191) of the first frame; and the angle between the second cover plate (16) and the third direction is an acute angle.

7. The battery pack according to claim 5, characterized in that: The second cover plate (16) is provided with a mounting hole (161); The battery pack further comprises a connector (17), wherein the connector (17) is arranged in the installation cavity (12), and a portion of the connector (17) is passed through the installation hole (161).

8. The battery pack according to claim 2, characterized in that: The frame body (13) comprises a first plate (131), a frame inner side wall (133) and a second plate (132); in the second direction, the frame inner side wall (133) and the first frame outer side wall (191) are arranged opposite to each other; The first plate (131), the inner side wall (133) of the frame and the second plate (132) are connected to form a U-groove structure; the end of the first plate (131) away from the inner side wall (133) of the frame is connected to one end of the first extension plate (14); and the end of the second plate (132) away from the inner side wall (133) of the frame is connected to one end of the second extension plate (15).

9. The battery pack according to claim 8, characterized in that: The frame outer side wall (19) further includes a second frame outer side wall (192); The U-groove structure comprises a first U-groove opening (134) and a second U-groove opening (135), wherein the first U-groove opening (134) faces the first frame outer side wall (191), and the second U-groove opening (135) faces the second frame outer side wall (192); The second frame outer side wall (192) is respectively connected to the end of the first plate (131) away from the frame inner side wall (133) and the end of the second plate (132) away from the frame inner side wall (133) to cover the second U-groove opening (135).

10. The battery pack according to claim 1, characterized in that: The frame (10) is at least one of a sheet metal part, a roll-formed part, and a die-cast part.

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